Attachment 113967 Details for Bug 89415 – VERTEX SHADER

VERTEX SHADER

542113792VertexShader_vs.glsl (text/plain), 2.86 KB, created by Matias N. Goldberg on 2015-03-03 22:10:16 UTC

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Filename:

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Creator: Matias N. Goldberg

Created: 2015-03-03 22:10:16 UTC

Size: 2.86 KB

patch

obsolete

>
>
>#version 330 core
>#extension GL_ARB_shading_language_420pack: require
>
>
>mat4 UNPACK_MAT4( samplerBuffer matrixBuf, uint pixelIdx )
>{
>        vec4 row0 = texelFetch( matrixBuf, int((pixelIdx) << 2u) );
>        vec4 row1 = texelFetch( matrixBuf, int(((pixelIdx) << 2u) + 1u) );
>        vec4 row2 = texelFetch( matrixBuf, int(((pixelIdx) << 2u) + 2u) );
>        vec4 row3 = texelFetch( matrixBuf, int(((pixelIdx) << 2u) + 3u) );
>	return mat4( row0.x, row1.x, row2.x, row3.x,
>				 row0.y, row1.y, row2.y, row3.y,
>				 row0.z, row1.z, row2.z, row3.z,
>				 row0.w, row1.w, row2.w, row3.w );
>}
>
>mat4x3 UNPACK_MAT4x3( samplerBuffer matrixBuf, uint pixelIdx )
>{
>        vec4 row0 = texelFetch( matrixBuf, int((pixelIdx) << 2u) );
>        vec4 row1 = texelFetch( matrixBuf, int(((pixelIdx) << 2u) + 1u) );
>        vec4 row2 = texelFetch( matrixBuf, int(((pixelIdx) << 2u) + 2u) );
>        return mat4x3( row0.x, row1.x, row2.x,
>                       row0.y, row1.y, row2.y,
>                       row0.z, row1.z, row2.z,
>                       row0.w, row1.w, row2.w );
>}
>
>layout(std140) uniform;
>
>in vec4 vertex;
>
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>
>
>in uint drawId;
>
>out block
>{
>
>    		float depth;
>} outVs;
>
>// START UNIFORM DECLARATION
>
>struct ShadowReceiverData
>{
>    mat4 texViewProj;
>	vec2 shadowDepthRange;
>    vec2 invShadowMapSize;
>};
>
>struct Light
>{
>	vec3 position;
>	vec3 diffuse;
>	vec3 specular;
>};
>
>//Uniforms that change per pass
>layout(binding = 0) uniform PassBuffer
>{
>	//Vertex shader (common to both receiver and casters)
>	mat4 viewProj;
>
>
>	//Vertex shader
>	vec2 depthRange;
>
>} pass;
>
>
>//Uniforms that change per Item/Entity
>layout(binding = 2) uniform InstanceBuffer
>{
>    //.x =
>	//The lower 9 bits contain the material's start index.
>    //The higher 23 bits contain the world matrix start index.
>    //
>    //.y =
>    //shadowConstantBias. Send the bias directly to avoid an
>    //unnecessary indirection during the shadow mapping pass.
>    //Must be loaded with uintBitsToFloat
>    uvec4 worldMaterialIdx[4096];
>} instance;
>
>layout(binding = 0) uniform samplerBuffer worldMatBuf;
>// END UNIFORM DECLARATION
>
>
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>    
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>void main()
>{
>
>    mat4x3 worldMat = UNPACK_MAT4x3( worldMatBuf, drawId );
>	
>
>    vec4 worldPos = vec4( (worldMat * vertex).xyz, 1.0f );
>
>
>
>
>	
>	
>	//Lighting is in view space
>	
>    
>    
>
>    gl_Position = pass.viewProj * worldPos;
>
>
>
>
>
>    float shadowConstantBias = uintBitsToFloat( instance.worldMaterialIdx[drawId].y );
>	//Linear depth
>    outVs.depth	= (gl_Position.z - pass.depthRange.x + shadowConstantBias) * pass.depthRange.y;
>
>	//We can't make the depth buffer linear without Z out in the fragment shader;
>	//however we can use a cheap approximation ("pseudo linear depth")
>	//see http://www.yosoygames.com.ar/wp/2014/01/linear-depth-buffer-my-ass/
>	gl_Position.z = gl_Position.z * (gl_Position.w * pass.depthRange.y);
>
>}
>
>

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Attachments on bug 89415: 113961 | 113967 | 113968 | 113970

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